Which expressions are equivalent to −3 − (7.5 + 4)?
select all that apply.

question 2 options:

(7.5 + 4) − 3

−(7.5 + 4) − 3

−(7.5 + 4) + 3

−3 − (4 + 7.5)

−(3 − 7.5) + 4

−3 + (−7.5 − 4)

−3 + (−7.5 + 4)

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

{0,1,2,3,4,5,6,20,21,22,23,24,25} the distribution is considered to be: skewed the right, skewed the left, not skewed?